From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 18 Oct 2001 23:37:32 -0700 From: Till Straumann Subject: Re: IRDA/IRCOMM on a TiBook patch To: Michel =?iso-8859-1?Q?D=E4nzer?= Cc: linuxppc-dev@lists.linuxppc.org, linux-irda@pasta.cs.uit.no Message-id: <3BCFCA2C.CACD571B@TU-Berlin.de> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 References: <3BCC104D.B5770ADE@TU-Berlin.de> <1003453347.24371.912.camel@pismo> Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: Michel Dänzer wrote: > > On Tue, 2001-10-16 at 12:47, Till Straumann wrote: > > > I (and I believe other people as well) had problems > > setting up IRDA/IRCOMM on a TiBook / 2.4.12-benh and > > older 2.4 series kernels [on powerpc]. > > > > As far as I could find out there are several problems: > > > > 1) There seems to be a timing problem when opening > > the irda port which prevents it from being properly > > initialized. > > > > When I run "irattach /dev/ttyS1 -s 1", my Nokia 8890 > > is never discovered. However, when I issue a 'cat /dev/ttyS1', > > prior to starting irattach (i.e. by opening the device > > [and holding it open until irattach starts]), > > things are properly initialized > > and discovery works. Putting 'mdelay(100);' somewhere > > in macserial.c:rs_open() does the job. However, I have > > not yet figured out what exactly causes the problem. > > A user space work-around involves patching irattach.c > > > > 2) There is an endianness bug. A possible solution is attached. > > Your patch seems to be missing a bit (in qos.c IIRC) though. What is it missing? Please, be a little bit more verbose :-) > > > 3) When applying 1) and 2), IRCOMM works provided that > > /proc/sys/net/irda/max_baud_rate is clamped to 57600. > > Apparently, there is another problem in 'macserial.c' where speeds > > higher than 57600 are treated especially. > > Have you managed to do anything 'real' yet? I tried your patch, and it > does seem to improve things, irdadump seems to show data from my Palm, > but I haven't succeeded to synchronize yet. > Sure - I can open a modem connection to my cellphone and issue any AT command I want. However, I have to take care of all of the three issues mentioned. (I.e. use patched irattach, use patched kernel and echo 57600 > /proc/sys/net/irda/max_baud_rate). -- Till > -- > Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer > XFree86 and DRI project member / CS student, Free Software enthusiast ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/